Tempered Laminated Glass What is it? Tempered laminated glass as named, it is laminated glass by two or more pieces of tempered glass and interlayer, which can be normal PVB, or Sentry Glass Plus from DuPont or DG41 from Saflex that are structural glass film. It is of high strength, high safety. Advantage: 1) Extremely high safety: The PVB interlayer withstands penetration from impact. 2) Energy-saving building materials: PVB interlayer impedes the transmission of solar heat and reduces cooling loads. 3) Sound control: PVB interlayer is an effective absorber of sound. 4) Ultraviolet screening: The interlayer filters out ultraviolet rays and prevents the furniture and curtains fro fading effect.